Miller has been open about his trouble with substance abuse including an addiction to powerful cough syrup - known on the street as purple drank. "At this time, an autopsy is pending and a cause of death has not been determined". However, though Grande has called Miller one of her "best friends in the whole world", she later called their relationship "toxic," hinting that his alleged drug use may have been to blame for their breakup.
Miller performed with Grande at a memorial concert following the 2017 Manchester Arena bombing and the pair released music together before their split earlier this year.
Tributes to Miller came from rappers including Wiz Khalifa, a fellow Pittsburgh artist who took Miller under his wing.
Notable quote: "I just wanna go on tour", Miller tweeted on Thursday. "So I completely cut it out". Discussing life after the split, Miller told the outlet, "I was getting my bearings, figuring out how to move".
A coroner's van was seen arriving at the scene shortly before 2.30pm.
Delta Fire Roaring Through Northern California Triples In Size
He drove northbound on Highway 89 Thursday night, but delayed is trip back to West Sacramento until Friday because of the traffic. The cause of the fire is not yet known, but was listed as "human"- meaning it could have been accidental or purposely started.
Speaking to reporters in the street, he said: "Everyone is sad".
"I don't want to be depressed".
"Just a great, great kid". Of course. But you know what? "His fans will never forget him".
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Miller's death was especially shocking to those around him, who apparently had no idea something like this was coming. Records, Miller's label, said in a statement.
The Weekend rapper was pronounced dead at the scene by paramedics. His house was reportedly cleaned prior to the police investigation.
Emergency services had been sent to a patient in cardiac arrest, according to a dispatch call obtained by celebrity news site TMZ.
"Although the two ended their relationship, Ariana always shared a deep connection with Mac and wanted nothing but the best for him", the source added of the couple, who announced their split in May after almost two years together.